Here is a simple method using only native tools that affords you less control than some of the excellent extensions mentioned above but might help get you started. Follow Me is native but won’t do tight curves, so keep the curves long, hence the extra step of scaling the wall down after extruding. Using Eneroth Upright Extruder for this would make it easier but I wanted to start with all native tools. Pardon the pauses, solid operations sometimes take a while to complete.
Next step for the other image you posted would be to set up a cutting “comb” to remove the parts not used.
