I would be willing to write a short tutorial on how to produce nice concentrates at home, using some ethanol and a rice cooker. But I guess there are hundreds of tutorials out there already... It's basically this, just that my method differs in small details:
I would use both deep frozen buds & ethanol and keep the contact period between alcohol and material a bit shorter than 5 mins, but that's only a question of taste. You wash out less waxes and other (possibly) unwanted plant material then.
I use this concentrate to mix it with cooking oil (30 ml oil on the extract of 30gr weed), so that 2 drops of the final oil somehow match the effect of 0.1gr weed. Please note that you have to decarboxylate the weed before the procedure if you plan to consume the product orally. The oil/concentrate mix is not meant to get smoked or vaped. You would use the pure concentrate for this.
You should try it once. If I can do it, then it's not rocket science...