Well, this past week-end I drove up to Bellevue, NE which is about a 40 minute drive from here in Lincoln and met up with Les from
Nebraska Bonsai who was nice enough to meet with me, show me how to prune the roots of my juniper as that's always a scary endeavor for a newbie, we've also changed the soil from plain dirt to a propper mix that he's also showed me how to do. My wife and I were over at his place for almost 3 hours, mostly talking about bonsai, different types of soils and mixes, showed me trees, tools, etc.
I'm no expert on this stuff but Les has been in the hobby for many many years. I can tell you that I've seen first hand the passion and care he puts into the hobby and the soil that he sells so in exchange for his help I'm pimpin' his products

Contact him or check out his site if you need any soil, tools and bonsai.
Anywhoo, my little juniper was a bit stressed, some of the top foliage was dry and crumbled, nothing that Les was worried about though. He did say that he suspects the tree never really went fully dormant because it was greener than he'd expected. We changed the soil, trimmed the roots, repotted it with some very slow-releasing ferts mixed in [tiny and yellow, what is it called?] and also gave me some sort of hormone[?] for me to mix in 2 gals of water. I am misting the foliage to help during this stressed time and the juniper is now outside in a place away from wind and where it is receiving afternoon sun. The temp here dipped these past few days first to low 40s and this morning was 31*F.
Later edit: almost forgot, the type of soil we used was a 50/50 mix of haydite, pine bark and a bit of sand which he explained that helps split the roots and develop many finer roots. Sound good?