How to remove a defect by hand with ScratchX

[Hoffmann21]

Alright cool. Do i have to switch pads when it gets that dirty?
sorry for the OT post.

I will ask them

[ESSO]

It good job, Today i buy ScratchX

[jrel209]

I don't know if this has been covered, but I figured this is the best thread to ask in. I searched on two different forums so far not including this one (autopia.org, and a local Euro car owner website). But I recently received some slight scratches on my car, they are still extremely smooth nothing deep, more like scuffs I guess you can say. So after researching it seems like scratchX is the best place to start.

But the question is for the life of me which I cannot seem to find out is. What exactly is considered the right technique, and apply w/ 'passion'. TBH if you guys held detailing classes in Northern Cali Bay Area region, I'd go in a heart beat btw. But from what I've gathered, I know it's wash and scratchX to just the area you want to correct right?

But do I use a clay bar before scratchX, or is that not advised since I am only doing a small portion of the car? Also people say apply w/ foam pad, then wipe off? Is that wipe off w/ a Microfiber buffing towel, or w/ a buffing pad, or do they mean wipe off 'excess' w/ the current foam pad?

Lastly, I understand scratchX is not a protectant or rather sealant/wax, so what would you guys recommend to top it off? Do I just go directly to a sealant/wax, or should I put on some form of pretreatment; or is that not recommended since I am only going to do a small portion of the car?

Also is it recommended to bluetape just the portion you're working around so you don't get confused when putting scratchX and than the sealant/wax?

Oh ya btw, I am extremely new to the site, but have been looking around the last few days, the work that people show here is awesome!