Home Care Software

Hi there! Have a few questions to ask. about taxation.
Im using the program called “Profiles”.

1) For housing costs such as: Hydro, Insurance, Mortage interest, mortage life insurance premiums.
What form would I put that under, is it tax credits, if so i’ve looked at and am confused. (The Alberta one)

2) For paying $800 for the care and feeding of a child’s eye-seeing dog (blind child) how is that taxed?

3) For purchasing a new computer and software that will be used solely in a home office, for employment usage. How would both be taxed?

Thanks alot in advance, really appreciate the help!