I need help learning all the alternatives on trombone.?

Question

I know all the basic ones though.

Alternatives are like you can play F in 1st position and in 6 position.

Answer 1

Trombone is a natural overtone instrument - without a trigger, there are very few true alternate positions. There are a lot of near sounding though and 'bone lets you tune up and down easily.

With a trigger, every position + trigger is an alternate to some other position.

The most important with a trigger are:
1T = 6
2T = 7

This allows you to stay out of 6 and 7 altogether if you want to.

This article http://www.garciamusic.com/educator/articles/alt.positions.html
has a nice explanation of the "alternate" positions available.
The chart in 1A will give you everything you need. You'll just have to match them up.

Answer 2

I played trombone throughout many school years. What is an "alternative?"