lower league is not hard it just requires patience and precise attenson to your finances because if you go into dept big time your job is under fire, Plus when you are looking at players stats whether to sign him or not dont just sign sign sign! you gotta look at the bigger picture like - what stats he needs for the specific postion, where will him play and so on. Because if you do sign a player for like 10k and you dont need him then 10k is quite alot in lower league look into every single detail there is.
most important thing you do is get a parent club and hopefully you will get someone like arsenal, man utd, chelseaor any other club with great players you will able to get on loan which will help you big time they can help teams predicted 15 or lower to push onto promotion so getting a parent club is the first thing you should do