First off the only guides I have found are for older versions of the game so is there any for the current version?
I was wondering on where you put your time allicated sometimes it shows ++? and other times ++ I was wondering why this happens and how to keep it the best allicated.
I’ll try answering, if you have any other questions please reply 
1. I dont think you need guides, but if you need to learn more you should try watching some Let’s Plays of the game! You will learn a lot.
2. If it says “++” you would probably put like, almost full. With something like 10% left. Use your fantasy, as you will never be a hundred percent accurate. And, ten percent plus minus will not affect the rating by more than at most one point.
Ok so what about – and +++ I never understand why it someitmes is solid and other times has the ?
“?” means “probably”. So if it says ++? that means that your best bet would be to take it as a two. But it might be a -- for all you know.