I use to braid hair in a salon back in my undergrad days for extra money and I would never, ever, EVER put micros in my own hair or in anyone's hair whom I care about. Period. And I know how to care for them myself, but I wouldn't do because IMO, its more work, expense and trouble than they're worth.
I did alot of micros for customers who wanted it, but I always would caution and instruct on proper care and most important, when its time to remove them, GET HELP, PREFERABLE PROFESSIONAL HELP -- pay someone to remove them because IMO, removing braids of ANY size is the point where breakage is most likely to occur, especially folks not use to working with braids and the frustration and time-consuming process of REMOVING EACH BRAID CAREFULLY. If braids have been a a long time AND has been washed repeatedly, there WILL BE TANGLES at the roots and special care and tools (I use a metal tail comb, using the tail to slowly untangle roots -- this takes TIME AND PATIENCE).
Depending on the lenght of time (I recommend no more than 3 months for ANY size braids, preferable 6 weeks, but no more than 12 weeks -- this really depends on the care take while braids are in). When I wear braids, I do my own and put in pencil-size or larger individuals braids using synthetic yaki pony hair. I spray the hair with ACV a few hours before using to lower the ph. I wash my braids once a week by FIRST, working in diluted 'poo (I like nexxus therappe or CON) on my DRY scalp with small amout of water until my scalp is nice and clean and I have a bit of 'poo foam going, avoiding getting the rest of braids wet, just focus on getting 'poo messaged into scalp only. SECOND, get in shower and focus water on scalp messaging 'poo out and avoid ruffling braids (bascially, minimum manipulation) but let the water and 'poo run down the lenght of the braids and squeezing braids gently, always keeping braids straight with water running down (this will prevent that "fuzzy look"). Once hair 'poo is rinsed out, I towel dry by squeezing braids dry with towel, again, minimum manipulation and always gently trying not to ruffle the braids. Once towel-dried, apply leave-in, I like nexxus humectress to the BRAIDS only, smooth each braid down with the cream and then tie hair down while still damp and put large rollers on ends (sorta like Sylver2 scarf method, only with braids). I leave tie down for as long as I can, the longer I leave the "fresher" my braids look. I DO NOT use oils or sprays on my braids or scalp (I know others do). This method keeps my braids clean and fresh looking from week to week and I usually keep braids in 6 weeks, after that I remove completely and rebriad (or touchup).
Whew, thanks for listening and sorry so long, but felt the need to share . . .