To really experience the "Third World," come dream upside-down with me.
Your first stop should be the Nicaragua Guide. It claims to have everything Nica on the Web, and at least as far as having everything from Nicaragua, they may be right. It's in Spanish. You can also try Nicaragua Online, which is in a haphazard mix of Spanish and English.
What's the weather in Managua? The Winsconsin Coordinating Committee on Nicaragua (WCCN) is an active American group making a positive difference in Nicaragua. They believe in investing in the poor, not giving them charity. CEPAD does a considerable amount of cooperating with them.
Here's a site that's actually located in Mexico. It features the apparently-official (but neglected) homepage of the Frente Sandinista de Liberacion Nacional. On the other hand, you can also look into the so-called Nicaraguan Foundation for Democracy and Develpoment, which just happens to also be the (also neglected) home of the so-called Liberal Alliance, the party of the new President of Nicaragua. General Somoza, who had Sandino assasinated and went on to form a 50-year dynasty of dictators, was also a "Liberal." But, hey, I'm sure they'll do much better this time around.
IBW is an Internet provider in Nicaragua (and is now ours), and has a growing index of links I haven't yet seen in other places, including news, weather, and Nicaraguan businesses.
La Prensa is a Nicarugua n newpaper, one of the largest. They don't like the Sandinistas or Alemán.
The US government has a site with general info and an Official History of Nicaragua. The U.S. Embassy in Managua puts out some rather dry economic data on Nicaragua.
City.Net has links to some incidental info.
And, here is where to find just about everything else on Nicaragua. These sites are independent, and I claim no responsibility for them. But if you know of any I've missed, let me know, and I'll add them.