I was thinking more in terms of CGC rated items, as potential buyers see 9.8 and their eyes light up. As for raw, I would never purchase or encourage others to, as it is simply too subjective and fraught with issues.CGC offers that graded guarantee,
I think the best advice for beginners is:
1. Determine if you are a collector or investor (you can be both but it takes a fine touch).
2. Seek advice on potential buys to avoid pitfalls (such as movie hype or ridiculous speculation such as Werewolf By Night #32).
3. Buy what you can afford.
In Point 2 there also needs to be an explanation of grades, and why sometimes a lower grade will do (eg. Amazing Fantasy #15 or Incredible Hullk #1).
There could also be a sub-section on potential selling, as a pet hate of mine is rookies having CGC grade "nothing issues" that become a 5 - 9.2 and then sit on Ebay for months (or years).
Food for thought.