Best to do is park on the side road adjacent to Bird Road. Find an entrance trough the trees or openings between bushes. Go on the trail heading north parallel to 157 ave. This trail is made of gravel and limestone. This particular trail will eventually end up on the Tamiami Trail (SW 8th Street). To the left of this trail there are several entrances that will lead to softer more technical trails made by "four wheelers" and motorbikes. The trails are in no particular order and there are several of them. If you stay on the gravel road you will eventually see a lake approximately one mile from Bird Rd. which is surrounded by other trails. It's also one of the the nicer views.
This trail is excellent for beginners, people in training and anyone who lives south and southwest and are too far from the other more technical parks.