One of the ways we can give to others is by teaching. We may not have many things to give. But many people are good at doing things that others are not, or may know things that others do not know. We can impart to others whatever skills and knowledge we have. We do not need to have exceptional skills or special knowledge. We just teach others who wish to learn, so that they too will acquire those skills or understanding.
When we see someone who is in need, perhaps, of food or other basic necessities, we can first give them what they need to meet their immediate needs, but then we can go a step further by finding ways to teach them what they need to know to become self sufficient. This way they, too, can care for those they love and are responsible for.
In our teaching, however, we should not withhold any information, but continue teaching all that we know, as long as the person wishes to learn. If, due to our selfishness, we decide to not teach the other person to the best of our ability by sharing all that we know, or perhaps due to self-interest, we decide that we have done enough and that the other person can figure out the rest himself, then we are not sincerely teaching. Sincerity is the key. We may not know a lot, but as long as we know something that others do not, then we should openly and honestly share our skills and knowledge with them.
Even if we do not have possessions or knowledge to give, we can still be kind. We can still be respectful to others. We can still be considerate of all beings around us. We can help others to feel safe around us.