Pull-ups are very effective for building basic strength. Wide arm pull ups help prepare the shoulders for advanced rings routines.

Negative pull-ups

Start by removing your feet from the ground and lower your whole body as low as possible to end up hanging from the bar or rings then return back and try stay up for five seconds.

Jumping pull-ups

Increase the difficulty of this exercise by increasing the height of the rings or bar. This is a good exercise for those who cannot perform a full pullup. Once you manage to do five of these, go for the negative pullup.

Pull-ups

pull your shin up above the bar or rings and then return to the hang and repeat

L chin-ups

Adding an L-sit to chin-up to makes it harder . Try to keep legs straight and horizontal.

L pull-ups

The L pull-ups is even harder than the L chin-up. Start by the over-grip hang with legs raised into L-sit and pull your chin over the bar. Pause and return back to a straight-arm hang.

Bulgarian pull-ups

Usin the rings, start narrow and end up with a very wide at the top of the repetition. Then lower back the initial position.
Make sure your keep the palms of your hands facing each other during the pull-up.

Bulgarian L pull-ups

Simply add an L-sit to the Bulgarian pull-ups to make it even harder.

Front wide grip

Your arms should be at least 1.5 times your shoulders width. Pull your chin over the bar then lower back smoothly to the wide arm hang.

Back wide grip

When yo reach the bar , try to pull the back of your neck to the bar to end up touching the bar.

Wide L pull-up

This challenging exercise is great for elbows and shoulder strength. It prepares you for advanced rings routines.
Simply add an L-sit to the wide pull up

Assisted one-hand pull-up

This exercise prepares for the ultimate pull-up, the one-hand pullup. Use a towel in one hand and use the other hand to pull yourlself up. Over time, as your strength improves, gradually lower the height of your assistance hand