First now is the time for you to start doing research as where you want to go to school - ignore current school rankings, coaches (they do come and go for the most part)....look at schools you will be happy at for 4 or 5 years and get the best education u can.
Go to each schools athletic web site and fill in the "Recruiting Questionnaire" or the Recruiting Form you will find on most every D1, 2 and 3's website. This will get you on at minimum a mailing list and allow the schools to start sending you basic info.
You are allowed to call and email coaches BUT they are very limited until the summer of your Senior year to contact you UNLESS you are at their camp or at a tournament site. In fact plan on getting the nice email telling you they cannot contact you per NCAA rules and not to think they are rude.
But you can still call them and if you get the coach or assistant on the phone (they cannot call you back so do not leave a message asking them to) you can in brief tell them your situation and how they want you to follow up with them.
Go to their camps - if they do not have one find out where the coach does work as many help out with the Nike camps for example - this will allow the coach to see you and spend time with you.
Biggest thing you can do is WIN on the court, Get a ranking, SELL yourself, start getting a cover letter and resume listing all your academic and athletic accomplishments organized.
A word of advice - DO NOT limit yourself to D1 - I got recruited and played D1 at a top ten school and looking back (20+ yrs ago) I really think I would have been much more happy at a top D2 or D3 school - I loved where I went and I had a great time but if I was to get a do over I would have looked harder and varied my scope, just a word from experience -
I have had both my son and daughter (she just commited last week) go on at D1 sports get recruited and play - Son went to a HUGE state school and my daughter a smaller D1 program at a private school, look at the schools FIRST that is the most important thing.
Unless you are a top 20 ranked nat'l player with the like of USC, Stanford, Texas...etc already sending you stuff you need to start looking.
good luck