Which better? Build Glasscannon or Tank to learning champs??

Ahoy guyz!

If i want to learn a champ, which type of build is better? You could say, often champs has a "core" build, and games not that long you can buy 5-6 items, most of the time just 2-3, before games ends. But nah.. Always there are more core items, and you can choose from them. 1 'must have' item max. (except very specific champs, maybe like adc's.)

So which better?

Like, now I try to learn . For her, the two most popular core build: , and or or

and a bit more scaling, less glasscannon: and etc..

So, what if I choose a way more tanky or dmg oriented build? (just while I learning the champ properly)

Why I think its (maybe) good for learning if you try way-out builds? Let's see my conclusion: If you build full dmg, its easier to deal dmg, even if you miss skillshots/ struggle at kiting. (A short story; when I learned , I had a hard time, I often died, while tried to do laning phase/anything. So I changed my core build into a less popular, glasscannon build: , (pre-reworked) (pre-reworked) , and by this, even if I died 5 times at lane, I bought my , and one-shotted my lane opponent(if was squishy) or a squishy target. It helped me to learn Riven a lot. but If you build full tank, its easier to lane, or even survive, enemies has harder time to punish your mistakes, bcs doesnt matter if you get hit by the full combo of enemy , you have 1,5k more hp than you normally would had with 'normal' build. And easier to learn kiting,etc by this, (I guess) .. I think its similar for runes, but I take the popular ones, most of the time.

TL:DR: Which type of build makes easier to learn a champ: tankier than normal, or glasscannon??

PS: Sorry for my english ^^