I wish I knew to only train guards or bigs, and to buy vets at whatever you aren't training. In my first season, I bought a whole bunch of players aged 22 and younger, and would do guard training one week, and big man training the next. Really hurt my team. Also, this may seem really stupid, but when I first joined BB, I thought the number next to the players name (which is player ID) was their world rank, so I would always buy the player with the lower number (which would be the higher rank). That ended up as me buying a bunch of old guys.