Great Content
The oldest and still probably longest lasting linkbuilding tip.
Get some great content. When you have the content, the links will come almost magically 
And best of all, they will be 100% natural links.
Offcourse, if you had that great content you wouldn’t be here reading these tips. So in the next few days you can expect some tips about creating that great content and most important, turning it into linkbait for building those links.