It's a pretty overwhelming game when you're just starting.
What to do? Well, read the rules, if you haven't already. Then, the BT Beginners' Guide (Help...Beginners Guide) is absolutely essential. There's a good one
here too.
After reading the guides, join the "Newbie Questions" sledging board. Instructions should be found in the BT Beginners' Guide somewhere. This board will cover a lot of the questions you might have.
You've joined (again) at the perfect time -- you didn't have any matches listed because it was the off-season. You should have your leagues assigned and matches drawn up by now.
So, once you've read the guides, you should take a good hard look at your squad, dividing them into:
• Trainees -- 17/18yos who are worth training.
• Players to keep -- those who have some skills, and are therefore worthy of a place in your 1st XI.
• Players to sell -- some players can be deceptive, e.g. a Proficient bowler with Abysmal consistency is no use to anybody...but you might be able to get some money for him from some mug who's not read the newbie guides!
• Players to fire -- get rid of the dead wood.
Only once you've done that should you think about your training regime. Bear in mind that Competent/Competent trainees are adequate for starter teams, and they still go pretty cheap.
BTW, one flaw of this BT forum is that a lot of us have been playing the game some time now, and the initial excitement has worn off. It's all slowed down a bit. There's not much patience for "dumb questions", if you see what I mean -- if you just post your whole squad with a message like "sort me out please", you're not going to get anywhere (unless I'm having a particularly boring day at the office). If you show that you've been trying to work it out for yourself, you'll get a much warmer reception!
One last tip -- it might not be a good idea for you to buy trainees just yet, as prices are always very high at the start of the season. You may well be able to get 17/18yos for half the price in just a few weeks' time. On the other hand, this is a good time to sell.
Good luck!