what things should i buy (eg stadium increase? scoreboard, gym, etc etc)

what training should i do? (my players condition are about 40% so i wanna get more (every 3 hours) until i start doing that 10 or 20 or 30% training)

what intensity should i set for my players (i have it on normal for all my players)

i have 660k to spend, but unsure on what to buy (players, stadium upgrades etc)

i also have a very young team, avg starting age is about 22-23

so any advice is helpful, but if you wanna add me on Facebook to check my team and for gifts, Shane Marchione