If I have any suggestion about Dota 2: Don't play matches with friends at the start. :) It is fine to create lobbies and bot machines playing with friends but I would never build a team with friends unless I knew for sure we all had a similar mmr and all would be okay with winning or losing. It isn't a "blame thing" but the chances for a better, more evenly matched game are much better if you let them play at their level.
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