I have a good knowledge about heroes and everything close to it, its pretty basic for the most, heres some easy combos and tactis for getting started:
Phantom Magician can summon Woodsman or some Destiny Heroes, thats your choice, since all of they're effects trigger at the SP, you got a litle combo
Having monsters in the grave can be really helpfull, even with destiny hero decks, just make sure not to send the wrong cards, if you wanna take the risk, a really good card is Magical Merchant, can trow a lot of monsters and also get you a S/T, if your deck is made right, when you use him you should get a huge advantage as long as you trow at least one monster.
Now miracle contact has been released, so what are you waiting for?. Its a really strong card since its better than a miracle fusion exept it sends materials to deck, if you start runing out of monsters or you have a good swarm power you definitly are wanting this card, it ignores sumoning conditions, wich allows you to get to some trickier fusions.
If you use Neo-Spacians or Destiny Heroes you're gonna need some draw power beacuse you can fusion all the time with them, Convert Contact and Destiny Draw can help you with this, besides with Neo-Spacians you can send 2 materials for a ''heavy'' contact, and with destiny heroes you can either get rid of some card you completly cant use now or trow something like dasher in case you draw a good monster, also, if you send plasma or dogma you cant revive them, so a few Monster Reincarnation will completly help, again with the discard power.
A good hero deck, must have swarm power, or something to balance it in case you can't have it. usualy its just polymerization, miracle fusion, and other fusion supports, with 25-30 monsters in deck, well thats not a good strategy, dead draws can happen even with all those monsters awesome effects, the best to avoid that dead draw is adding something special or using different heroes, combining elemental heroes with destiny heroes you can get a better swarm power and a better speed, not to mention vision fusions, neos is tricky to use, if you use him as an add-on no more than 2, neos knight can take you out of a lot of troubles, and its easy to summon, neo-spacians are hard to use but they bring contact with them, a neo space is a must be, theres also advanced contact (as i tell them), those use 2 neo-spacians with neos for a huge powered monster, with them the best idea is the grave, miracle fusion, prisma and cards like monster reborn will make you summon them in no time.
Evil heroes are one of the trickiest, but if you fuse them right you're gonna have an extreme powered deck, polymerization is not really a good choice for a deck like this, with dark fusion and dark calling you cant take them out of banish, the best is to have a lot of cards focused to banish, but not loosing the focus of the deck(10 max, max being completly desesperated). Since they have some fusions that dont ask specific monsters, its a good idea to add fiends and rock types, fiends lvl 6 or higher, and both strong enough to make a good dark gaia, also you can just take it out, all the other evil heroes can do a lot of good, the rock monsters are hard to fit in, unless you base it in that, but thats not soo simple, here i end this helping guide for hero cards.