I've found generally that experienced modeller's advice is the worst thing imaginable for beginners. Experienced modellers have their own hard-won tricks and specific brands, and often don't realize how utterly non-transferable their knowledge is to other brands or other circumstances...
Most of the advice I've gotten over the years takes absolutely no account whatsoever of the equipment/skills limitations of the beginner it is directed to:
-For instance, no mention is ever made that airbrushes are totally useless without a compressor or at least a big air tank filled at the local garage (the cold-air Co2 cannisters are useless for this use, especially with acrylic paints), and no heed is taken that compressors or big tanks are not practical for the available space/noise/transportation limitations of some beginners... How do you carry that stupid big tank from the garage on a bike? How do you use a compressor without a specific modelling area? Most experienced modellers haven't riden bikes in decades by the looks of it, and that just give you a clue at the gulf between them and the beginners they assume they can help...
-No advice is ever given on how to best use simpler items like spraycans and easier-to-unclog spray guns with Co2 cannisters, and not much advice concerning the apparently unthinkable use of paintbrushes for the main base finish: I've never been given the advice that most paints brushed-on should be slightly thinned just like airbrush paint for best results... Neither have I heard that shaking the bottle is a long, long way from being as good as stirring it to suspend the pigments for an even matte finish...
One modeller did give me the advice to twist frozen caps by just barely grabbing the cap top in pliers: A huge help...
-The advice to use masking for two-colour upper-surface hard edge paint schemes is only good if you have a delicately blowing airbrush, which ALL modellers naturally assume you have: For all the other spraying methods, the results of masking is sharp lifted edges that look horrible: If only the advice to use a paintbrush for the second colour had been given to me, it would have saved me a lot of work and disapointments...
-For cleaner more dust-free finishes, when you don't have the expert's high tech basement spraybooth, I have yet to hear the advice that night-time or a rainy and cloudy day keep the sun's ray away from raising dust particles off every surface they touch and then heat up... A huge difference in ambient dust levels which even the "pros" don't seem to have a clue about (You can tell sometimes the parts of their models sprayed by day from those colours sprayed by night...)
-Finally, when there's putty on a model and you want a good metal finish over that porous surface, I have yet to hear anyone sing the praise of a clear gloss coat as a superior primer (except for a print magazine modeller known as "Dr Asher") where even lacquer-based spray cans like Tamiya's gloss will not craze the naked plastic (it will craze clear plastic occasionally)...
Most of the advice consist of assuming a beginner will want to equip himself just like the old hand, which is a very effective way of keeping youngsters away from what is after all an unambitious-looking hobby...
I think there is no way a beginner's modelling should be done with the same tools and tricks of an experienced modeller, but that is where the entry level is assumed to be these days... Most experienced modellers probably don't even remember what being a beginner is like, and that actually makes them ill-suited to give them advice...
Gaston