Some tips:
Your Ultimate turns you into a CC-Immune State. (To some new players: This means, while your Ultimate is casting, you are immune to stuns, knock backs, slows, etc.)
You can cancel Disapparate by pressing your right mouse button (only the part where you turn CC-Immune in an "orb" form).
Now, ways to maximise Disapparate:
Use this when chasing an enemy or running away.
Strategically place your "trail" along the enemy's path for better stun potential.
Cancel the orb form right away when chasing an enemy so you may still auto-attack when they're in range.
Some other tips for survival/efficient start:
Get a Soul Stone. Screw everything, it's a priority early game for good poking/harassing potential early game (and MP recovery).
Have the habit of spamming your 1 (it recovers HP by a % which is very handy). Soul Stone will help you recovering back the lost MP. Keep your HP at max at all times as Sol is squishy.
Predict where your opponents will be every time. Think ahead. Your 3rd skill is probably one of the greatest threatening skill in the game when boxing. It deals HUGE damage, and slows. Make sure to land this every time to keep them pressured. Same with your Ultimate. Sol's Ultimate is very easy to dodge, so make sure your prediction game is strong.
Enjoy! There are no right and wrong ways to play a god (unless intentional of course, but some still work nevertheless, albeit less efficient).
I didn't specifically answered OP's question, but some new Sol users may be looking at this thread and this post at this very moment, so I shared some few insights.
VVGF VVGL