What do you consider "good manners" regarding preparation and seriousness?

So, last night I was playing a pub-game. I haven't been playing for that long, so bear in mind that it's at a pretty low level. However, as soon as the match started the beast master goes: "so, which skill should I pick first?". And just stands there passive for 10-20 seconds until somebody answers her question (I know the player is female, hence no need for s/he). Apparently she has never played BM before, hasn't bothered loading up a guide in a browser window, or really, anything.
I tell her that I think it's good manners to have at least done half a bot match before going into a 5v5 (even unranked) if you're unsure of how a hero should be played.

Her response is: "I'm doing the all hero challenge, so I don't have time for that". I tell her that I am, in fact, also making my way through the challenge and yes, I think she does have that kind of time.

Now, the team was ****, and I definitely should have picked differently (we didn't really have any initiation), so it was no surprise that the opposing team mopped the floors with us. However, I was wondering if I'm alone in thinking that it's good manners to come with a basic idea of what you're gonna do for at least the first 10 minutes? especially when you have decided in advance which hero you're going to pick. is there a consensus on this? there are always going to be drunks / n00bs / whatever, especially in unranked matches, but is just generally agreed that in "normal matches" anything goes?

feeding

I always play 3-4 months of bot matches before moving onto pubs. For any one hero. Which is why to this day, I can only play 3-4 for heroes well... xD

Well it's a good idea in general to read up a guide or play a short bot match 5-10 minute to see how a hero feels. Players spend that amount of time trying to figure the hero out anyways so why not do it during a time where it doesn't involve 4 other players you're playing with.

I guess it can be considered bad mannered since sitting in the fountain for an extra 30+ seconds past initial countdown timer affects your teammates. However at your level I wouldn't worry too much about it and focus on improving, wouldn't matter that much if that player had an idea on how to play a certain hero or not.

Can I just say that the all-hero challenge has really screwed up matches? People come in and just blindly pick their hero for the challenge with no regard for what the team needs. I once played where we had a pretty specific strategy planned out with our Invoker mid, and then the last hero who was silent during our planning phase picks a Pudge and demands mid because it's his hero challenge. He didn't even land a hook.

Anyway, onto the topic. I don't think it's really a matter or manners, per se. It's just in your team's best interest to know how to play a hero before using him in a public game. Imagine if the hero had been someone like Earth Spirit who takes considerable practice and time spent playing him before you even get a grasp of everything his skills can do. Even Beastmaster is a pretty difficult hero, so she really should've spent some time in bot matches before jumping into a pub.

I almost never play bot matches, but I am decent with almost every hero (I feed with Slardar, Pugna, and Naga Siren). I read up alot on heroes I am intrested in playing soon, fining the best overall builds and such. Works pretty well. Also not sure how anyone sucks with Beastmaster, I have a 100% winrate with him out of 10 games.

Yeah, I think it's rude and just unwise to think your team should have to teach you how to play a hero (what if no one knows the hero you chose?) All I know is that if I want a lower chance of getting yelled at/cussed out then I'd better practice heroes in botmatches before playing in pub games. The only time I'd try out an unfamiliar hero in a pub match is if I'm partied up with a much more experienced player who doesn't mind giving out advice during the round.

Especially being a lady...I hear enough of comments like "a girl?! gg" as it is without going into matches unprepared :P

ok, it's a bid off topic, but I actually appreciate you tagging on that last line. My "team mate" from the other night was the first person I've played with that I knew for a fact was female, and it really bothered me knowing that I'd be associating girls in dota with that kind of ******** until I could meet some counter examples :)

Gasp!! Basing your opinion of a whole gender of players on one experience! Don't doooo it babe! :O

But haha yeah I am kinda baffled that women seem to be so rare in the game--I've only seen 3 so far that I knew for sure were female too. Just gotta remember though, there could be a lot more that simply don't use voice chat.

And heh I just remembered some games where someone apologized for being new to a hero but then proceeded to do really well with some advice. So though it's not advisable to try a new hero in a pub game, I do think it's considerate to give a heads-up to your teammates that you're not familiar with the hero, and sometimes you can have a very good match still :) I guess it depends on how you ask

Personally, I would always practice with bots and check out some of the good guides on this site before playing a match (or ranked for that matter) with a Hero I was unfamiliar with.
I have been caught out when playing "All Random" though. But as I played with friends they were able to give me some advice (unfortunately it didn't help my performance much).
It would be nice to know that the people you were playing with knew something about the Hero that they picked and would be playing the next however many minutes with but that it the beauty DotA my friends; random people will pick a random Hero without any thought of know-how or team line-up. (Team needs another Support - pick melee carry)

^^For, psithyrus: I have been fortunate enough to play DotA with girls on my team a number of times and I have never had a negative experience. It can only be good for a gaming community to have everybody feel like they are included, regardless of sex - (hope that doesn't sound too cheesy).

P.S. Love the meme pic! d;p