Here are 3 useful tips you can use when starting fishing:
1) Using Bait Correctly
Using lead/lead free weights. Many people use bank sinkers with a number 2 hook.
To avoid sinkers to slide, you would use a swivel that acts as a stop. To protect the knot, you should use plastic beads between the swivel and weight. Using two appropriate swivels could allow you to rig the sliding sinkers.
Worms are a very popular bait for fishing. Remember to buy only fresh bait and keeping it cold avoids them from getting soft and allowing the bait to stay within your hooks.
2) How to fish
This really depends on what type of fishing you are doing. Fly fishing, course fishing, boat fishing all have different tactics.
It is often best to get tips from fellow fishermen doing the same type of fishing. Most fishermen will gladly give you some fishing tips.
3) Fishing from a boat