I'v got a coach, theres a few of us in a group. But its not like footy training when everyone turns up and does the same drills together. We all do our own thing, at different times. Since he coaches sprints and middle distance theres a variety to runners of all different skills and ages, so its basicly one on one, but with the company of others.
I was given a list of coaches phone numbers from someone at school who thought I should pick up aths. And yeah, a few charged a small price, but the guy I picked didn't. You should try looking around, go down to a track and ask around.
Over here a grass race is called a 'gift' and they still use blocks. When I was considering entering a gift I was told that running on grass requires a slightly different technique, like a slightly longer stride length. I'll ask my coach and get back to you.
As I said, I'v never ran on grass, but if I did I would just use my normal sprint spikes. Invest in a pair, they'll shave loads of your time. You don't need ankle support in a race, since your only running in a straight line. Unless you don't some serious joint problems padded and shoes with support will just hold you up.
Like any sport theres on and off season training. During the off season we do stair climbs, hill climbs, sand circuits, and more conditioning work at the track. Coming up to and during the on season we just do speedwork/starts at the track. Where do you live? Whens the season start?
Watching a video won't help your form, since you can't see yourself running. If you can't get a coach or personal trainer to watch you and give you tips I guess the next best thing would be to get someone to watch pro's sprint, then watch you sprint, and try and tell you what your doing wrong. I'm not sure how well that would work, but its worth a shot.