The general rule with getting insurance of any type is to only get what you need. If you're single with no dependants you probably won't need life insurance, but you may wish to consider protecting your income.
So don't get too much, but don't get too little either. The key is to make sure you needs are covered. Sometimes it can be hard to compare one policy with another - they've all got different benefits and cost different amounts. When you do take out a policy, make sure it really does cover you for what you want.
As always, shop around and use price comparison websites to check out the best deals. Cost savings and quality of cover will vary greatly, so bear in mind that higher prices do not necessarily guarantee higher quality in the world of insurance. However, the more cover you want, the higher your premium is likely to be.
Try to get three quotes and compare them with each other. Look out for any waiting periods, exclusions, excesses and no claims bonuses.
If in doubt, get expert, unbiased information from a qualified insurance broker (for home, car etc) or independent financial adviser (for life assurance, income protection etc).
The stress of making a claim can be huge, especially if you've suffered something traumatic. So the last thing you want is for your insurer to make a fuss and be difficult about paying out. For that reason, it's well worth picking an insurer that has a good reputation - this could be based on a personal recommendation from family and friends or a previous experience you've had or through your own research using websites.
Once you've decided what you want to cover, take out the insurance as soon as possible. Your circumstances could change and you may not be able to take out the cover later.