Bass Clef

The first step to sight reading is to know the notes within the staff.

Some music books use phrases like Good Boys Don't Fight (G B D F) and All Cows Eat Grass (A C E G).

For me, I recognize by chords.

G B D F is a G7 chord and A C E G is an Am7 chord.

Whichever works for you, use it.

Start reading something simple before going into complicated rhythms.

Cheers