Perhaps rather than using bootstrap on a high stakes project (like client work or apps with paying customers) you could try bootstrap customization on a low ris

Perhaps rather than using bootstrap on a high stakes project (like client work or apps with paying customers) you could try bootstrap customization on a low risk side project? That way when (not if) your screw it up there is no anxiety of an angry client or customers demanding a fix? There is no anxiety of having to support IE or some client’s esoteric dom-modifying browser plugins. This way you can learn at your own pace and really get s feel for the codebase and workflows for bootstrap customization.