All carnivorous plants grow very slowly from seed so your best bet is to acquire some divisions off another grower. Also, CP seeds are only viable for a VERY short period of time (couple of weeks at best) so it's best not to buy seeds off people you don't know or 'grow-kits'. These grow kits usually contain seeds of normal plants such as strawberries and the ones that DO have CP seeds in are usually too old to be able to germinat.
In the case of Dionaea (VFT), Darlingtonia (Cobra-lily) and Sarracenia spp. (N. American pitcher plants), they are all temperate species so their seeds will need to be cold stratified before you can get them to germinate. Germination usually takes a month and these can can about 5 years from germination to fully-grown mature plants.
In the case of temperate Drosera (sundews), they need a period of cold stratification as well and they can grow pretty slowly.
In the case of sub-tropical Drosera (sundews), they are fairly easy to grow as they can just be sown and will reach maturity in around a year.
In the case of pygmy Drosera (pygmy sundews), they can take long to grow from seed but you get get mature plants in about 4-6 months if starting from gemmae.
In the case of tuberous Drosera (tuberious sundews), they can take very long to grow from seed but you can get mature plants in about 8-24 months if starting from tubers (depends on the size of the tubers).
In the case of temperate Pinguicula, you need to give the seeds a period of cold stratification and will grow slowly but you can get mature plants in about 8-24 months if starting from gemmae (depends on the size of gemmae).
In the case of Meixcan Pinguicula, they take their time to grow form seed.
I wouldn't recommend Cephalotus (Albany pitcher plant) or Nepenthes (Tropical pitcher plant) from seed as they are very hard to grow.
I love growing CPs from seeds as every individual offspring is genetically different from one another and I hybridise different species and etc. but I have been in this hobby for a couple of years now so I know when to expect what and so on. However, if you're just wanting to start out in growing CPs, plants from seeds take absolutely ages to grow so I would recommend buying divisions or established plants off people you know and trust. Flytrapcare one of the largest US forum (if not the largest) for carnivorous plants and you can see what people are offering in the Sales and Trade section.
So basically, CPs take AAAAGES to grow from seed to mature plants compared to normal houseplants so any species of sub-tropical Drosera such as D. capensis, D. aliciae and D. spatulata will be the best for beginners if you really want to grow some CPs from seeds.