How to use show/hide conditions for several options

Hello, I'm trying to create a 2-part survey that requires specific formatting criteria. Please advise about the appropriate widgets for the following criteria:

1. After completing part 1 of the survey, and beginning part 2, survey takers should not be able to return to part 1.

2. Question 1 will have ~25 options to check off, multiple options can be checked off. Questions 2 and 3 should specifically address each of the conditions as specified in question 1.

To clarify using the specific example: question 1 is "what plateware brands do you own?" Questions 2 and 3 are "what do you like / not like about the brand you own." Questions 2 and 3 should be repeated for each brand. I understand this will be a conditional type question. I'm wondering if there is an easy way to auto-format this as the number of permutations is very high.

Question 1 would be a normal checkbox field with 25 options.  I am not sure if part 2 begins with question two or how that setup works.  If question 2 is part of part 1, you would need to conditionally show the additional fields for each selection.  If each option from question 1 had 2 shown fields, it would require 50 fields with 2 shown in each condition. 

Once part one is finished, you could have part two as your thank you page URL:

http://www.jotform.com/help/211-Setting-Up-the-Thank-You-Page

This way, you could load an entirely new form for the second part.