Ascending

There are countless ways to ascend a rope, here are a few simple ones:

Reverso style Belay device as ascending ratchett

set up belay device in autoblock mode
build leg prussik
go up, if you want to rappel undweight belay device, clip biner behin belay device into harness & rappel

Garder Hitch (one way ratchett)

loop rope through 2 biners
go round and through one

Grigri/ reverso style and ascender

attach leg loop to ascender
grigri/reverso as ratchett
3:1 by passing rope through biner on ascender
- (if not possible knot a loop into the top of the leg loop and use for biner)

...or use set of texas prussiks

REMEMBER! Always use backup knots.. clove hitches below ratchett to belay loop OR panic/catastrophe knots, about every 3m