Vocher entry major types

In Tally , Voucher entry consist of mainly two types I) material in & out II) Amount in & out.

In each type sub varieties are there as below

I) Material In & Out

1. Sales voucher
2. Purchase voucher
3. Goods receipt notes
4. Rejection in
   
5. Rejection Out
6. Delivery notes Etc.

II) Amount In & Out

1. Receipts
   
2. Payments
3. Contra
4. credit notes
5. Debit notes
6. Commission
   
7. Discounts. Etc

If we learn OR understand mainly Sales, Purchase, Payment & Receipts entry, Then all other entry are similar to above entry only relevant situation different names are there.