#1
Newb here.

I want to change my string from 9's to 10's on my Squier Strat. However this time, I'm gonna tune it to Eb.

The question is, do I need to adjust something on my guitar? Truss rud adjustment, or Intonation?
#2
You'll only find out what you need to do after you change the strings and tune it up.
Quote by Diemon Dave
Don't go ninjerin nobody don't need ninjerin'
#3
Doubt it. Maybe the slightest action and intonation tweaks.
Charvel / Godin / Peavey / Marshall / AMT
#4
I've done exactly the same thing once, it was all fine, no truss rod adjustment was needed, everything was OK. String tension is going to be almost the same, it's not a big change.
#5
Should be fine. If you'll go for larger gauge, like .11, you may need to enlarge nut slots.