For recipes it's pretty much what you think:
Slams = Removes > Remove a non X add an X = Remove X add X. I'd say for Augs it's Crit>>>>Speed/Chaos>Fire/Life/Cold/Caster>Lightning/Defense/Attack/Physical
Reforges are good for Crit>Speed>Chaos for a base to start on (IE Elusive/Tailwind boots).
Early on I'd make sure you do some T2/T3 and get plenty of hortis ready for future saves. I like to keep at least one of every X resist To Y resist option to "fix" gear when I do gear swaps as well as literally every remove and augment I run across. A lot of the players fill up a horti with 3 recipes, remove it, and dump it into a tab where you can then search for the crafts it has on it by keyword. That saves a lot of room in your garden, but I personally would rather save the tab slots at the moment so I just have 40 hortis strewn about and then my dumb ass has to wander around looking for what I want.
Another helpful tip is if you have flowers to plant the lower tier 1's liberally around your T1 farms. They have LARGE radius and just generally help you get more juice/better crafts/more craft options. You can also use them for targeting crafts.
For instance:
I needed a 6 link because my 6 So 4B2W Astral Phys exploder/Curse/Crit chest ate 3k fusings so far and hasn't six linked. So I used the T3 white flower (fortune?) and planted it with several blue farms in range. Then I farmed T1 seeds, didn't plant them, then came back and checked for "linked socket craft" (primal feasting seeds) and then planted about 38 of them around the flower. When they were all ready to harvest I unfortunately didn't get a 6L, but I got something like 7-8 5L's in one go. Using these flowers you can target the Augs/Removes you need with just a little extra effort. If you're high end and you're not low on juice/storage/etc I'd recommend just plowing through your maps (remember seeds need to be 10 lvls within ilvl of the craft item) and then do a plant with tactical flowers when you have enough of the right seeds. Can be VERY helpful when you REALLY need just one recipe like my Elusive/Tailwind boots that rolled life regen/life regen/life regen/16hp/36hp/4hp/68hp. But if you look for seed keywords and match them up with the flowers you can really start crafting hard.
Some other miscellaneous crafts I think are worth saving: Change non X to X color (actually fairly rare), white sockets (I've never even seen it), and a few randomises (1-2) for each you run into. Caster randomize is great for spell crit on chest, all the ele randomise are great for topping your resist rolls, and of course life randomise to get that 99 roll on your belt.
Once you get a stockpile of crafts you can basically take any base you want and with much less luck than previous leagues, make an amazing item. I literally got an unset shaper ring, reforged crit rolls 3x until I got ass mark, removed everything but ass mark, filled the suffix with the resists I needed, slammed T1 life in two tries, slammed life gain on hit for spells, and then finished it off with some flat damage to spells. Took me a whole 10-15 minutes on a 10c item. It's this kind of stuff that's actually reshaping trade towards the low-mid tier gear end right now which is very interesting. I used to sell 3-6 items a week for like 6-10 ex total. Now I sell that many a day at 10-35c because they're always rings that are "fixable". Got an unset ring? Does it have 50+ of a stat? Can you remove all the other stats? Congrats! That's 30c.
It's a wild league.