Text: the fastest and easiest way to open your wav file is to double-click it.

Correct capitalization: The fastest and easiest way to open your WAV file is to double-click it.

Text: we are to rest in the fact that we are declared righteous because of christ's sacrifice for us.

Correct capitalization: We are to rest in the fact that we are declared righteous because of Christ's sacrifice for us.

Text: there is a little list of issues:

Correct capitalization: There is a little list of issues:

Text: and, mobile bookings are increasing at a rate of 20% or more each year in many countries.

Correct capitalization:
And, mobile bookings are increasing at a rate of 20% or more each year in many countries.