Section 1: Here are the rules for writing the molecular formulas to fill in for number 2:
Alkanes: CnH2n+2
Alkenes: CnH2n
Alkynes: CnH2n-2
Next you should look up the prefixes (Table 3 on page 718 in your textbook).
Finally you should try to fill in charts 4,5 and 6. Here are some answer to get you started:
2 Carbons - Ethane (C2H6), Ethene (C2H4), Ethyne (C2H2)
3 Carbons - Propane (C3H8)...
Section 2: Complete #5 & 6 in the Organic Chemistry packet