Thanks guys and thanks Edward for asking for assistance, I will certainly guide you through it, no problem.
There have been many other beginners that had the same "dilemma" and this one is a good thing to have in my opinion, with a selection as big as mine, I'm sure you will not be dissapointed.
Like other members explained, there are woods and types of blanks that you should avoid as a beginner, I'm sure Mal intentions were to say exactly that when he said "I would avoid his resin cast pen blanks (including Resifills) and I would also avoid the softer pen blanks that he sells." I need to clarify a little further as you may have misunderstood it.
I make and have some of the most "challenging" blanks to work with, that said, they will also produce results that are unmatched with anything else around however, they require a higher level of experience and skill to handle them correctly something that any beginner cannot possibly have, YET...!
So, if you are going to keep them for when you feel more confident, the possible range widens considerably. I have a lot of woods that are great for beginners and yes, keep away from cross and diagonal cut blanks for now, they will be better for later, if the straight cut or with the grain blanks, there is plenty, you have also the burls that I already know you like, some are easier to work than others but generally OK.
One of the determinant factors in your situation is to decide if you want to invest any extra money apart from the AU$25.00 voucher, the minimum charge for chipping is AU$12.00 that is the cost of 250gr parcels (normally 4 blanks) but, you can buy a lot more than raw blanks with the AU$25 you can buy 16 blanks (4 packs of 4 blanks) however that will incur a 1kg parcel weight for AU$24.00 charge.
If you want to limit yourself to paying only the minimum charge (AU$12) you will need to use the voucher value in more expensive and single blanks but that will take you to the stabilised and Resifill stuff, which is OK if you are going to keep them for some time later in your skill progress.
Send me a PM with your thoughts and the woods you have seen already that you like, that will be a good start...!
Cheers
George