You can use small fiber pots, seed trays, and pot makers to start your seeds. Each type of pot has its advocates, experiment with what works best for you. Something that holds moisture well, but also drains well is important, and sterile medium to prevent damping off or other fungal and disease problems. Special starting medium is widely available.
A few sources to understand how to propagate your plants.
The best growers I know use coco fiber for their new seedlings:
One of my biggest problems with seed starting has always been keeping the new seedlings watered regularly. It always seems that early spring is filled with so many things to do. A self watering mat is ideal for someone like me, it keeps the moisture available for the critical time that new seedlings must not dry out or get waterlogged. I think it might be useful for vacation time for my indoor plants, too. (Soil Moist Mats contain water storing polymer woven into a cloth to line baskets and containers.)
I am really sold on water retaining granules, too. I like those in the soil for my indoor plants and for outdoor container plantings. Soil Moist Granules is a good one to try.
You can use your windowsills for your seedlings, but eventually a set-up like the one from Sunlite Garden will be on your wish list.
If you use grow lights, keep the lights three (3) inches above the seedlings so plants grow to be sturdy and compact- or “thrifty” as gardeners like to put it. If relying on the sun from a window, be sure to turn the plants every once in awhile.
Other tips :
Make your own seed tapes:
1. Using black and white newsprint, make one inch wide strips of the newsprint.
2. Make glue using 1/4-cup water to one-cup all-purpose flour.
3. Dab each seed with the flour-water glue and stick them in the center of the strip. Space evenly using the recommended amount of space between each seed.
4. When the glue is dry, roll up the strips and place in separate sealable plastic bags. Use silica packet or one tablespoon of salt to keep dry, if necessary. Place the seed tape into the respective seed packet.
5. Store in a cool place, such as a basement, until spring.
6. When it’s time to plant your seed tapes, lay each strip seed side up in rows several inches deep. Cover with soil and water.
Have you heard of “winter sowing”? that is the practice of germination for seedlings during winter’s cold. How do you do that, you ask? by creating miniature greenhouses out of easy to obtain materials like plastic milk jugs or liter soda containers. This is the ideal method for seeds which require “pre-chilling” or stratification, hardy, or even half-hardy seeds.