Walrus

It def. needs pruning & cleaning up - I see some dead branches.

You can prune it anyway you like it, just a little or drastically. It will need better sunlight to grow compact thou. Try to think of the shape you want it to be...I recently hacked few, and they are already growing new leaves (just abt. 2weeks). Here are photos of 2:

I would remove all those little ones - I like 1/pot; but that is a personal preferance.

Thank you! What about this side? Does it need pruning as well. It was pruned last year and where the cuts are, some have 2-3 new branches coming off. Here are some photos.

It looks to me that this side isn’t as etiolated.

Walrus

IMO, it is etiolated all over. Space between sets of the leaves is too long. This is best time to do pruning, leaves/branches will start growing within couple of weeks. Branching is normal & expected; wherever you prune, 1-4 new branches should grow. Here are some other jades I pruned; all new growth started in about 2.5 weeks. Even Tricolor jade that grows slower (visible new growth is circled). It was pruned on Feb.17 & photo is just taken (those couple of branches that are left will be also pruned off - I left them only to help to "make food")

What should the distance between leaf sets be? So I know when it’s not etiolated.

Walrus

There isn't a specific measurement. But longer it is, more etiolated jade is. They should be quite close - plant should be copact as much as possible. It isn't easy to get plants kept indoors realy compact, but could be helped with pruning & using supplementary lights, or keeping them outside in warm enough weather. Below is an example from net...

I wish my jades were as compact as that! But they certainely get more compact when outside - photo below shows some:

When having them outside what temperature is too hot ? I had some get sunburnt when trying to place outside

Sunburn doesn't occur from heat, it occurs from taking plants from inside to outside, suddenly, without acclimating first. Any plant that has been inside can be burned this way.

Acclimation can start with the first or last hour of the day, and over the course of weeks, gradually increase exposure so the leaves adjust without burning.

Walrus

All my succulents are outside & most in full sun whole day. But I acclimate them. I don't bring them in & out, but often put taller, potted perenials in front of them to create some shade/filtered sunlight. Or garden umbrella...or a chair...they get slowly moved (plants used for shading) to expose succulents to more & more sunlight gradually. If you have few plants, you can bring them out for a while, exending time gradually. Or keep them first in morning sun only, again - extending time or moving into stronger sun gradually...they could be acclimated many different ways