there must be loads of recipes on here and try the bbcgoodfood website, but here's some info. I love lentils (pre SW too!)
Red lentils are great for making indian dhals and soups no need to soak, and quite quick to cook. If you buy from a cheapy / ethnic shop then I'd take the time to rinse them - sometimes there are bits of stalk in there which float to the top. Supermarket ones are ready rinsed.
Yellow lentils / split peas dhals and soups again, they can take ages to cook if they are not fresh, so I soak the elderly ones
Green lentils / puy / brown are great in veggie bolognese type dishes, and lots of italian type
Most tinned lentils are the green ones
One of my fave soups is Ainsley Harriots Gourmet Express
Easy Lentil Supper soup
1 Tbsp olive oil
1 onion chopped
2 carrots finely chopped
1 red chilli seeded and finely chopped
1 tsp mustard seeds
3 tomatoes roughly diced
100g red lentils
1.2 litres stock (Veg or if you can get ham stock its better)
juice 1/2 lemon
salt and pepper
Fry onion and carrots 3-4 mins until beginning to soften, add chilli, garlic and mustard seeds and cook 2 mins
Stir in tomatoes, lentils and stock, bring to the boil. reduce heat and simmer for about 30 mins until the lentils are tender and easy to crush.
Beat the soup with a spoon to crush until you get a consistency you like (don't try using a hand blender, as the mustard seeds go blurg)
squeeze in the lemon juice and season
this is super yummy with bacon lardons, but still v. yummy without
what kind of lentils are you planning on trying?