A good way is to build up your arena first, do NOT immediately buy expensive players. That's what I did for 2 seasons, I mean I had lowsy players.I bought like one or two good players on my second season, and made some money which I used to expand my arena. Now it's my 2nd full season(started in the middle of season 16). In the beginning of this season I bought a few more good players for my league, and now I'm 12-0 for this season(going for 22-0 and hopefully relegate to III-division + making like 70k profit a week. Now I'm also getting 2x the average $ from attendance. I started somewhere in April, so basically it took me like 7 months to get on my feet. That's not a fast way to make "big bucks", but there's no fast way for that.