What happens next in this paragraph?

How to access the 179d tax credit for energy efficient construction
Make sure you're in the right position to qualify.
Firstly you have to be a property owner, tenant, architect or an engineer who intends to carry out energy efficient improvements to a property or has already done so.
Find a reputable tax services company.
Available choices:
[I] As soon as possible, check with them for references. If possible, search online for occupancy references.;
[II] Ensure this entity will gain permission to use your property, and conduct business in the county where you're located. Obtain a business identification number (ein).;
[III] You can find exceptional companies on the internet subject to a few verifications and cross checks. You will need to subject your choice to the usual verification process that is required for online companies.;
[IV] A list of qualified tax services providers will help you find the right company. Ask your government or building department where the business is located and ask them to give you their telephone number.;
[III]